diff --git a/Makefile b/Makefile
index 30d605d0..74b3e489 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,7 @@ install:
 	install -d -m 755 $(DESTDIR)$(pkgdatadir) $(DESTDIR)$(unitdir) $(DESTDIR)$(oscplugindir)
 	install -d -m 755 $(DESTDIR)/var/cache/repo-checker
 	for i in $(pkgdata_SCRIPTS); do install -m 755 $$i $(DESTDIR)$(pkgdatadir); done
+	chmod 644 $(DESTDIR)$(pkgdatadir)/{osc-*.py,*.testcase}
 	for i in $(pkgdata_DATA); do cp -a $$i $(DESTDIR)$(pkgdatadir); done
 	for i in osc-*.py osclib; do ln -s $(pkgdatadir)/$$i $(DESTDIR)$(oscplugindir)/$$i; done
 	for i in $(SUBDIRS); do $(MAKE) -C $$i install; done